CN202054856U - Waste heat boiler device for recovering low-grade heat in coal gas of converter - Google Patents
Waste heat boiler device for recovering low-grade heat in coal gas of converter Download PDFInfo
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- CN202054856U CN202054856U CN2011201237552U CN201120123755U CN202054856U CN 202054856 U CN202054856 U CN 202054856U CN 2011201237552 U CN2011201237552 U CN 2011201237552U CN 201120123755 U CN201120123755 U CN 201120123755U CN 202054856 U CN202054856 U CN 202054856U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a waste heat boiler device for recovering low-grade heat in coal gas of a converter, which comprises a body housing. Heat exchange tube bundles are arranged in the body housing, a conical smoke gas inlet is arranged at the upper end of the body housing, a conical smoke gas outlet is arranged at the lower end of the body housing, the heat exchange tube bundles are arranged in a way of being parallel to the flow direction of smoke gas, the plurality of heat exchange tube bundles are arranged in parallel, and a plurality of flat plates which are parallel mutually are arranged in the conical smoke gas inlet and the conical smoke gas outlet along the vertical direction. By adopting the waste heat boiler device, the explosion harm of a waste heat boiler caused by the intermittent production of the converter can be avoided; simultaneously, as a heat exchange wall surface is vertically placed, the ash deposition quantity is small; an additional automatic smoke dust sweeping device can enable the heat exchange efficiency of the waste heat boiler to be high, so that a large amount of superheated steam which can be used for power generation or other purposes can be obtained; therefore, the waste heat boiler device is particularly suitable for the smoke gas of the converter after rough dust removal.
Description
Technical field
The utility model relates to a kind of waste heat boiler device, particularly a kind of waste heat boiler device that is used for the recovery of coal gas of converter tow taste heat.
Background technology
At present, in field of iron and steel smelting, the recovery of coal gas of converter mainly is divided into dry method recovery technology (LT method, two kinds of Lu Qi-Di Senfa) and hydrometallurgic recovery technology (OG method).Coal gas of converter process gasification cooling flue is cooled to 800～1000 ℃ with about 1450 ℃ coal gas of converter, after this LT method is cooled to them about 200 ℃ by the Water-and mist-spraying of evaporative cooler again, and the OG method directly washes with water by Venturi meter it is cooled to normal temperature.More than two kinds of methods all the physics sensible heat below 800～1000 ℃ is not only obtained reclaiming, but also wasted big water gaging.Iron and steel enterprise is the power consumption water consumption rich and influential family of country, and reclaiming more unnecessary heat as much as possible and reducing water consumption has significance to energy-saving and emission-reduction.With regard to RECOVERY OF CONVERTER GAS, utilizing the low grade residual heat producing steam in next life below 800～1000 ℃ or generating electricity has become the emphasis of current research.
Contain a large amount of explosive deleterious CO gases (carbon monoxide) in the coal gas of converter, and carried volume of smoke.The intermittence characteristics that converter steelmaking is produced make that air is easy to sneak into, and high-temperature smoke has the effect of igniting, when converter fume cooling is following to coal gas spontaneous ignition temperature (about 610 ℃), is easy to blast, and this will endanger equipment and personnel's safety.The waste heat boiler that reclaims this part low grade residual heat not only will face this type of blast problem, but also must solve the heat exchange efficiency decline problem when the heat-transfer surface dust stratification is serious.
The utility model content
The purpose of this utility model is the defective at above-mentioned prior art, provides a kind of and can prevent that the production of converter steelmaking intermittence from causing the waste heat boiler device that the coal gas of converter tow taste heat reclaims that is used for that explodes.
The technical scheme taked of the utility model is to achieve these goals: a kind ofly be used for the waste heat boiler device that the coal gas of converter tow taste heat reclaims, comprise body housing, be provided with heat-exchanging tube bundle in the described body housing, described body housing upper end is provided with conical gas approach, the lower end is provided with conical exhanst gas outlet, described heat-exchanging tube bundle is arranged parallel with flue gas flow direction, a plurality of heat-exchanging tube bundles are arranged in parallel, and along vertical direction some flat boards that are parallel to each other are set in described conical gas approach and the described conical exhanst gas outlet.
Described conical gas approach lower end is provided with the import fixed frame, and described conical exhanst gas outlet upper end is provided with the outlet fixed frame, is fixed with flat board on the described import and export fixed frame.
The heat-transfer surface of described heat-exchanging tube bundle is the vertical direction setting.
On the body housing of described import fixed frame lower end steam outlet is set, on the body housing of described outlet fixed frame upper end the water vapour import is set.
Described conical exhanst gas outlet is provided with temperature sensor.
Described conical gas approach connects the gas purging pipeline, and described gas purging pipeline is provided with gas control valve, and the gas approach pipeline of described conical gas approach is provided with flue gas control valve.
Described gas control valve and flue gas control valve are motor-operated control valve, described gas control valve, flue gas control valve and temperature sensor all are connected electric control unit, and described electric control unit is used for the temperature pilot-gas by-pass valve control according to described temperature sensor, the switch of flue gas control valve.
Described body housing is formed by connecting by bolted two branch body case.
The beneficial effect of the technical scheme that the utility model embodiment provides is: the utility model has avoided the converter intermittence to produce the waste heat boiler explosion hazard that brings, simultaneously vertically to place the dust stratification amount few for the heat exchange wall, incidental automatic purging flue dust device, make the heat exchange efficiency height of waste heat boiler, having obtained a large amount of superheated vapours thus can be for generating or other usefulness, and the utility model is particularly useful for through thick dust separating converter gas.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, to do one to the accompanying drawing that uses among the embodiment below introduces simply, apparently, below listed accompanying drawing only be embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the waste heat boiler schematic representation of apparatus that is used for the recovery of coal gas of converter tow taste heat that the utility model embodiment provides;
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
In the accompanying drawing, the component list of each label representative is as follows:
1. flue gas control valve, 2. gas control valve, 3. conical gas approach, 4. import fixed frame, 5. steam outlet, 6. body housing, 7. water vapour import 8. exports fixed frame, 9. conical exhanst gas outlet, 10. temperature sensor, 11. electric control units, 12. heat-exchanging tube bundles, 13. it is dull and stereotyped, 14. vapour passage, 15. exhaust gases passes, 16. gas purging pipelines.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model embodiment is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1 and Fig. 2, a kind of waste heat boiler device that is used for the recovery of coal gas of converter tow taste heat, comprise body housing 6, be provided with heat-exchanging tube bundle 12 in the body housing 6, body housing 6 upper ends are provided with conical gas approach 3, and the lower end is provided with conical exhanst gas outlet 9, and heat-exchanging tube bundle 12 is arranged parallel with flue gas flow direction, a plurality of heat-exchanging tube bundles 12 are arranged in parallel, and along vertical direction some flat boards that are parallel to each other 13 are set in conical gas approach 3 and the conical exhanst gas outlet 9.
The utility model can prevent the blast that the production of converter steelmaking intermittence causes.According to the characteristics that the converter steelmaking intermittence is produced, avoid the chance of coal gas of converter and air mixed as far as possible, reducing flow blind angle and forming plug flow is to avoid the reliable way of exploding.For this reason, the heat-exchanging tube bundle layout is parallel with flue gas flow direction in this waste heat boiler, and every comb bundle is parallel to each other, and flows in the long and narrow space of flue gas between every comb bundle, and the eddy current that this layout can effectively reduce in the boiler produces.According to the principle of Combustion, flame will extinguish less than time between the flat board of its quenching distance by spacing.Utilize this to put explosion-proof principle, this waste heat boiler has been arranged some flat boards that are parallel to each other on the vertical direction in conical smoke entrance, between the flat board distance less than the quenching distance of coal gas of converter flame, like this combustion wave by the time just can extinguish automatically.
For the ease of fixing of flat board, conical gas approach 3 lower ends are provided with import fixed frame 4, and conical exhanst gas outlet 9 upper ends are provided with outlet fixed frame 8, and fixed installation dull and stereotyped 13 on the import and export fixed frame 4,8.
Referring to Fig. 2, in order to reduce the dust stratification of furnace wall face, the heat-transfer surface of heat-exchanging tube bundle 12 is that this waste heat of vertical direction arranges also parallel with flue gas flow direction, and flue gas flow direction is identical with the flue dust gravity direction, and flue dust can not fallen on the heat-transfer surface in a large number like this.
Referring to Fig. 1 and Fig. 2, on the body housing 6 of import fixed frame 4 lower ends steam outlet 5 is set, on the body housing 5 of outlet fixed frame 8 upper ends water vapour import 7 is set.
Referring to Fig. 2, be vapour passage 14 in the heat-exchanging tube bundle 12, be exhaust gases passes 15 outside the heat-exchanging tube bundle 12, steam flows in heat-exchanging tube bundle 12, flow in the long and narrow space of converter gas between every comb bundle, steam outlet 5 connects import fixed frame 4, and water vapour import 7 connects outlet fixed frame 8.The flow direction of steam and the flow direction of flue gas are contraries, can reduce evaporation area like this.
As preferably, conical exhanst gas outlet 9 is provided with temperature sensor 10; Conical gas approach 3 connects gas purging pipeline 16, and gas purging pipeline 16 is provided with gas control valve 2, and the gas approach pipeline of conical gas approach 3 is provided with flue gas control valve 1.
For ease of control, flue gas control valve 1 and gas control valve 2 are motor-operated control valve, flue gas control valve 1, gas control valve 2 and temperature sensor 10 all are connected electric control unit 11, and electric control unit 11 is used for according to the temperature control flue gas control valve 1 of temperature sensor 10 and the switch of gas control valve 2.The body housing of evaporating space two parts and connected by bolt about 6 minutes promptly are formed by connecting by bolted two branch body case, conveniently take apart to carry out large repairs or clean.
For guaranteeing heat exchange efficiency, use temperature transmitter 10 monitoring exhanst gas outlet temperature when its numerical value is too high, illustrate that dust stratification has caused heat exchange efficiency decline, close flue gas control valve 1 and simultaneously open the gas control valve 2 of high pressure nitrogen in order to purge through the adjustment of electric control unit 11 this moment.The body housing 6 of this waste heat boiler is set to dismountable, and when nitrogen blowing still can not be dealt with problems or during equipment rebuilding, detachable body housing 6 backs remove dust stratification in the boiler by artificial cleaning.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. one kind is used for the waste heat boiler device that the coal gas of converter tow taste heat reclaims, comprise body housing, be provided with heat-exchanging tube bundle in the described body housing, described body housing upper end is provided with conical gas approach, the lower end is provided with conical exhanst gas outlet, it is characterized in that, described heat-exchanging tube bundle is arranged parallel with flue gas flow direction, a plurality of heat-exchanging tube bundles are arranged in parallel, and along vertical direction some flat boards that are parallel to each other are set in described conical gas approach and the described conical exhanst gas outlet.
2. waste heat boiler device according to claim 1 is characterized in that, described conical gas approach lower end is provided with the import fixed frame, and described conical exhanst gas outlet upper end is provided with the outlet fixed frame, is fixed with flat board on the described import and export fixed frame.
3. waste heat boiler device according to claim 1 is characterized in that, the heat-transfer surface of described heat-exchanging tube bundle is the vertical direction setting.
4. waste heat boiler device according to claim 3 is characterized in that, on the body housing of described import fixed frame lower end steam outlet is set, and on the body housing of described outlet fixed frame upper end the water vapour import is set.
5. according to each described waste heat boiler device of claim 1-4, it is characterized in that described conical exhanst gas outlet is provided with temperature sensor.
6. waste heat boiler device according to claim 5, it is characterized in that, described conical gas approach connects the gas purging pipeline, and described gas purging pipeline is provided with gas control valve, and the gas approach pipeline of described conical gas approach is provided with flue gas control valve.
7. waste heat boiler device according to claim 6, it is characterized in that, described gas control valve and flue gas control valve are motor-operated control valve, described gas control valve, flue gas control valve and temperature sensor all are connected electric control unit, and described electric control unit is used for the temperature pilot-gas by-pass valve control according to described temperature sensor, the switch of flue gas control valve.
8. waste heat boiler device according to claim 7 is characterized in that, described body housing is formed by connecting by bolted two branch body case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201237552U CN202054856U (en) | 2011-04-25 | 2011-04-25 | Waste heat boiler device for recovering low-grade heat in coal gas of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201237552U CN202054856U (en) | 2011-04-25 | 2011-04-25 | Waste heat boiler device for recovering low-grade heat in coal gas of converter |
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| Publication Number | Publication Date |
|---|---|
| CN202054856U true CN202054856U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201237552U Expired - Fee Related CN202054856U (en) | 2011-04-25 | 2011-04-25 | Waste heat boiler device for recovering low-grade heat in coal gas of converter |
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| CN (1) | CN202054856U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160639A (en) * | 2013-02-21 | 2013-06-19 | 江苏浦士达环保科技有限公司 | Converter smoke waste heat utilizing system |
| CN103184306A (en) * | 2011-12-30 | 2013-07-03 | 中冶赛迪工程技术股份有限公司 | Converter coal gas residual heat recovery device |
| CN109882823A (en) * | 2019-03-07 | 2019-06-14 | 大唐东营发电有限公司 | A kind of concurrent heating formula boiler afterheat transportation system |
| CN111412447A (en) * | 2019-01-04 | 2020-07-14 | 中国石化工程建设有限公司 | Method and system for generating steam by using synthesis gas of coal gasification device |
| CN114182058A (en) * | 2021-12-14 | 2022-03-15 | 无锡翔龙环球科技股份有限公司 | Protective explosion-proof device for converter flue gas waste heat boiler |
| CN115652019A (en) * | 2022-05-16 | 2023-01-31 | 安徽工业大学 | Layered waste heat recovery device and method for converter gas |
-
2011
- 2011-04-25 CN CN2011201237552U patent/CN202054856U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184306A (en) * | 2011-12-30 | 2013-07-03 | 中冶赛迪工程技术股份有限公司 | Converter coal gas residual heat recovery device |
| CN103160639A (en) * | 2013-02-21 | 2013-06-19 | 江苏浦士达环保科技有限公司 | Converter smoke waste heat utilizing system |
| CN111412447A (en) * | 2019-01-04 | 2020-07-14 | 中国石化工程建设有限公司 | Method and system for generating steam by using synthesis gas of coal gasification device |
| CN109882823A (en) * | 2019-03-07 | 2019-06-14 | 大唐东营发电有限公司 | A kind of concurrent heating formula boiler afterheat transportation system |
| CN114182058A (en) * | 2021-12-14 | 2022-03-15 | 无锡翔龙环球科技股份有限公司 | Protective explosion-proof device for converter flue gas waste heat boiler |
| CN115652019A (en) * | 2022-05-16 | 2023-01-31 | 安徽工业大学 | Layered waste heat recovery device and method for converter gas |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20180425 |
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| CF01 | Termination of patent right due to non-payment of annual fee |